External I/O Connector
Applies to: 
Connector description
| Property | Value |
|---|---|
| Name | External I/O |
| Type | 26-pin 3-row high-density female sub-D connector |
| Location | Card bracket |
| Usage | General purpose I/O and power output |
Pin assignments
| Pin | Signal | Usage |
|---|---|---|
| 1 | GND | Ground |
| 2 | DIN12+ | High-speed differential input #12 – Positive pole |
| 3 | IIN11+ | Isolated input #11 – Positive pole |
| 4 | IIN13- | Isolated input #13 – Negative pole |
| 5 | IIN14- | Isolated input #14 – Negative pole |
| 6 | IOUT12- | Isolated contact output #12 – Negative pole |
| 7 | GND | Ground |
| 8 | Not connected | |
| 9 | GND | Ground |
| 10 | GND | Ground |
| 11 | DIN12- | High-speed differential input #12 – Negative pole |
| 12 | IIN11- | Isolated input #11 – Negative pole |
| 13 | IIN12+ | Isolated input #12 – Positive pole |
| 14 | IIN13+ | Isolated input #13 – Positive pole |
| 15 | IIN14+ | Isolated input #14 – Positive pole |
| 16 | IOUT12+ | Isolated contact output #12 – Positive pole |
| 17 | TTLIO12 | TTL input/output #12 |
| 18 | GND | Ground |
| 19 | DIN11- | High-speed differential input #11 – Negative pole |
| 20 | DIN11+ | High-speed differential input #11 – Positive pole |
| 21 | IIN12- | Isolated input #12 – Negative pole |
| 22 | IOUT11- | Isolated contact output #11 – Negative pole |
| 23 | IOUT11+ | Isolated contact output #11 – Positive pole |
| 24 | GND | Ground |
| 25 | TTLIO11 | TTL input/output #11 |
| 26 | +12V | +12 V Power output |